Binder for lignite upgrading and preparation method and applications thereof

A technology of binder and lignite, applied in the field of lignite upgrading, can solve the problems of unsuitable lignite popularization and use, low utilization rate of lignite, high price, etc., and achieves advantages of long-distance transportation and storage, low cost, and increased thermal stability. sexual effect

Inactive Publication Date: 2014-08-27
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The additive disclosed in the patent CN102061208A is composed of oil sand, pine powder, sodium lauryl sulfate, humic acid and other components. The disadvantage is that the utilization rate of lignite is low, only 50-60%
Due to the defects, expensive price or huge consumption of these binders used in the prior art, they are not suitable for promotion and use as binders for lignite

Method used

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  • Binder for lignite upgrading and preparation method and applications thereof
  • Binder for lignite upgrading and preparation method and applications thereof
  • Binder for lignite upgrading and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A binder for lignite upgrading, which is formed by mixing the following raw materials:

[0023] Sodium humate 1.5g, aluminum dihydrogen phosphate 0.75g, aluminum phosphate 0.30g, hydroxymethyl cellulose 0.15g, thermosetting phenolic resin 0.45g, calcium carbonate 3.75g, metakaolin 8.1g.

[0024] The above-mentioned preparation method of a lignite upgrading binder comprises the following steps:

[0025] 1) Select raw materials according to the above ratio;

[0026] 2) Sodium humate, aluminum dihydrogen phosphate, aluminum phosphate, hydroxymethyl cellulose, thermosetting phenolic resin, calcium carbonate and metakaolin were mixed evenly (put into a high-speed disperser and disperse for 2 to 3 minutes) to obtain lignite extract quality adhesive.

[0027] The application of the above-mentioned lignite upgrading binder, which is applied to the lignite molding process, comprises the following steps:

[0028] The first step is to adopt lignite from Dongming Coal Mine, Hail...

Embodiment 2

[0034] A binder for lignite upgrading, which is formed by mixing the following raw materials:

[0035] Sodium humate 1.5g, aluminum dihydrogen phosphate 0.75g, aluminum phosphate 0.30g, hydroxymethyl cellulose 0.15g, thermosetting phenolic resin 0.45g, calcium carbonate 3.75g, metakaolin 8.1g.

[0036] The above-mentioned preparation method of a lignite upgrading binder comprises the following steps:

[0037] 1) Select raw materials according to the above ratio;

[0038] 2) Sodium humate, aluminum dihydrogen phosphate, aluminum phosphate, hydroxymethyl cellulose, thermosetting phenolic resin, calcium carbonate and metakaolin were mixed evenly (put into a high-speed disperser and disperse for 2 to 3 minutes) to obtain lignite extract quality adhesive.

[0039] The application of the above-mentioned lignite upgrading binder, which is applied to the lignite molding process, comprises the following steps:

[0040] The first step is to adopt lignite from Dongming Coal Mine, Hail...

Embodiment 3

[0046] A binder for lignite upgrading, which is formed by mixing the following raw materials:

[0047] Sodium humate 4.5g, aluminum dihydrogen phosphate 1.5g, aluminum phosphate 0.75g, hydroxymethyl cellulose 0.6g, thermosetting phenolic resin 0.9g, calcium carbonate 5.25g, metakaolin 1.5g.

[0048] The above-mentioned preparation method of a lignite upgrading binder comprises the following steps:

[0049] 1) Select raw materials according to the above ratio;

[0050] 2) uniformly mixing sodium humate, aluminum dihydrogen phosphate, aluminum phosphate, hydroxymethyl cellulose, thermosetting phenolic resin, calcium carbonate and metakaolin to obtain a binder for lignite upgrading.

[0051] The application of the above-mentioned lignite upgrading binder, which is applied to the lignite molding process, comprises the following steps:

[0052] The first step is to adopt lignite from Dongming Coal Mine, Hailaer, Inner Mongolia, and its water content is 33% (mass). Get 10kg lignit...

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Abstract

The invention relates to the technical field of lignite upgrading, and particularly relates to a binder capable of significantly boosting the drop strength and thermal stability of lignite, and a preparation method and applications thereof, which are applicable to lignite formed in the Mesozoic Jurassic period of Inner Mongolia. The binder for lignite upgrading is characterized by being prepared from the following raw materials in percentage by mass: 10-30% of sodium humate, 5-10% of aluminum dihydrogen phosphate, 2-5% of aluminum phosphate, 1-4% of hydroxymethyl cellulose, 3-6% of thermosetting phenolic resin, 25-35% of calcium carbonate and 10-54% of metakaolin. The binder disclosed by the invention is simple in preparation process, wide in material sources, and low in cost; and the binder prepared by using the method can increase the drop strength and thermal stability of lignite.

Description

technical field [0001] The invention relates to the technical field of lignite upgrading, in particular to a binder for significantly improving the drop strength and thermal stability of lignite, a preparation method thereof and an application thereof, which are suitable for lignite formed in the Mesozoic Jurassic era in Inner Mongolia. Background technique [0002] my country has discovered lignite resources of 129.132 billion tons, accounting for about 12.7% of my country's coal reserves. In the context of the tense global energy situation, the economic value of lignite and its related processing and production technology have been valued by the world's energy circles again. How to process and utilize lignite reasonably should be said to be a major task in the development of my country's coal industry. [0003] Lignite has high moisture (15-60%), high ash content, low calorific value (the low calorific value of the dry base is generally 16.73-25.09MJ / kg, and the low calori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/10
Inventor 严春杰刘意王洪权袁六四
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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